Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method of wireless communication comprising: receiving, at a first device, over a wired medium between the first device and a second device, a first plurality of packets from the second device, each packet of the first plurality of packets comprising data representative of a portion of a wireless signal comprising a second plurality of packets sampled from a continuous waveform based on a common master clock at the second device; receiving, at the first device, from the second device over the wired medium a synchronization signal based on the common master clock at the second device; synchronizing, at the first device, a local clock of the first device to the common master clock based on the synchronization signal; and reconstructing the second plurality of packets based on the first plurality of packets via aligning samples corresponding to the continuous waveform received in the second plurality of packs based on the synchronized local clock.
Wireless communication. This invention addresses the challenge of accurately reconstructing a wireless signal that has been sampled and transmitted over a wired medium. The method involves a first device receiving a plurality of data packets from a second device via a wired connection. Each of these packets contains data representing portions of a wireless signal, which was originally sampled from a continuous waveform using a common master clock at the second device. Crucially, the first device also receives a synchronization signal from the second device over the wired medium. This synchronization signal is derived from the same common master clock. The first device then uses this synchronization signal to adjust its own local clock, aligning it with the second device's common master clock. Finally, the first device reconstructs the original wireless signal by aligning the sampled data from the received packets. This alignment is performed based on the synchronized local clock, ensuring that the samples corresponding to the continuous waveform are correctly ordered and combined.
2. The method of claim 1 , wherein the first device comprises an endpoint, the second device comprises a common physical point, the method further comprising: transmitting, over a wireless medium, the second plurality of packets as a reconstructed signal.
This invention relates to wireless communication systems, specifically addressing the challenge of efficiently transmitting data between devices in a network. The method involves a first device, which is an endpoint, and a second device, which serves as a common physical point in the network. The first device generates a first plurality of packets and transmits them to the second device. The second device then processes these packets to reconstruct a signal, which is then transmitted as a second plurality of packets over a wireless medium. The reconstructed signal ensures reliable data transmission between the endpoint and the common physical point, improving communication efficiency and reducing errors in wireless networks. The method may also include error correction mechanisms to further enhance data integrity during transmission. This approach is particularly useful in scenarios where multiple endpoints communicate through a central node, ensuring seamless and accurate data transfer in wireless environments.
3. The method of claim 1 , wherein the data representative of the portion of the wireless signal further comprises at least one of: chips indicative of the samples, CDMA patterns indicative of the samples, OFDM frequency-domain data indicative of the samples, and OFDM data without a cyclic prefix indicative of the samples.
This invention relates to wireless communication systems, specifically methods for processing and analyzing wireless signals to extract and represent data from signal samples. The problem addressed involves efficiently encoding and transmitting signal data in various wireless communication standards, particularly in systems using spread spectrum techniques like Code Division Multiple Access (CDMA) or Orthogonal Frequency-Division Multiplexing (OFDM). The method involves capturing samples of a wireless signal and generating data representative of a portion of that signal. The data can include different forms of encoded information derived from the samples, such as chips in CDMA systems, which are modulated data symbols spread across a frequency band. Alternatively, the data may represent CDMA patterns, which are sequences of chips that encode specific information. For OFDM-based systems, the data can include frequency-domain representations of the signal, such as subcarrier values or OFDM data without a cyclic prefix, which is a guard interval used to prevent inter-symbol interference. This approach allows for flexible representation of wireless signal data, accommodating different modulation schemes and signal processing requirements. By encoding the signal in these various forms, the method supports compatibility with multiple wireless standards and enables efficient signal analysis, decoding, or transmission in communication systems. The technique is particularly useful in applications requiring precise signal reconstruction or interference mitigation.
4. The method of claim 1 , further comprising: using the synchronized local clock to drive a digital-to-analog converter.
A system synchronizes a local clock with a reference clock to ensure precise timing in digital signal processing. The local clock is adjusted to match the reference clock, compensating for any drift or delay. This synchronized local clock is then used to drive a digital-to-analog converter (DAC), ensuring accurate conversion of digital signals to analog signals with minimal timing errors. The synchronization process may involve phase-locked loops (PLLs) or other clock synchronization techniques to maintain alignment between the local and reference clocks. The DAC converts digital data into analog signals at precise intervals dictated by the synchronized clock, improving signal fidelity and reducing distortion in applications such as telecommunications, audio processing, or instrumentation. The system ensures that the DAC operates with consistent timing, critical for applications requiring high precision, such as high-speed data transmission or real-time signal processing.
5. The method of claim 1 , wherein the synchronization signal comprises a physical layer signal.
A method for wireless communication involves synchronizing devices in a network by transmitting a synchronization signal. The synchronization signal is a physical layer signal, meaning it is generated and processed at the lowest layer of the communication protocol stack, ensuring low-latency and efficient synchronization. This method is particularly useful in wireless networks where devices need to align their timing to avoid interference and improve data transmission efficiency. The synchronization signal may include timing information, allowing receiving devices to adjust their internal clocks to match the network's timing reference. By using a physical layer signal, the method ensures that synchronization is achieved quickly and reliably, even in challenging wireless environments. This approach is beneficial for applications such as device-to-device communication, IoT networks, and other scenarios where precise timing is critical. The method may also include additional features, such as error detection and correction mechanisms, to further enhance synchronization accuracy. Overall, the technique provides a robust solution for maintaining synchronization in wireless networks, improving performance and reliability.
6. The method of claim 1 , wherein synchronizing the local clock to the common master clock comprises: generating a recovered clock signal based on the synchronization signal; and locking a phase and a frequency of a local oscillator to the recovered clock signal, wherein the locked local oscillator is used as the local clock.
A method for synchronizing a local clock to a common master clock in a distributed system addresses timing discrepancies that arise in networks where multiple devices must operate in unison. The method involves generating a recovered clock signal from a synchronization signal received from the master clock. This recovered clock signal is then used to lock both the phase and frequency of a local oscillator, which serves as the local clock. By aligning the local oscillator with the recovered clock signal, the local clock is synchronized to the master clock, ensuring precise timing across the system. This synchronization is critical in applications such as telecommunications, data networks, and distributed computing, where timing accuracy is essential for data integrity and system performance. The method ensures that the local clock maintains phase and frequency alignment with the master clock, reducing errors and improving overall system reliability. The technique is particularly useful in environments where clock drift or network delays could otherwise disrupt synchronization.
7. The method of claim 6 , wherein locking the phase and the frequency of the local oscillator to the recovered clock signal is performed using a slow control loop.
A method for synchronizing a local oscillator with a recovered clock signal in a communication system involves locking both the phase and frequency of the local oscillator to the recovered clock signal. This synchronization is achieved using a slow control loop, which adjusts the local oscillator's phase and frequency over time to match the recovered clock signal. The slow control loop operates at a lower bandwidth compared to traditional high-speed phase-locked loops, reducing power consumption and complexity while maintaining stable synchronization. This approach is particularly useful in systems where precise timing alignment is required, such as in wireless communication, satellite systems, or digital signal processing, where power efficiency and reliability are critical. The method ensures that the local oscillator remains synchronized with the recovered clock signal, minimizing phase and frequency errors that could degrade system performance. By using a slow control loop, the system achieves robust synchronization with reduced hardware requirements and lower power dissipation, making it suitable for battery-powered or resource-constrained applications.
8. The method of claim 6 , further comprising receiving a second wireless signal from a third device, wherein synchronizing the local clock is further based on receiving the second wireless signal.
A system and method for synchronizing a local clock in a wireless network involves adjusting the local clock of a first device based on timing information received from a second device. The synchronization process includes receiving a first wireless signal from the second device, where the first wireless signal contains timing data. The local clock of the first device is then adjusted according to the timing data extracted from the first wireless signal. Additionally, the synchronization process may further incorporate timing information from a third device by receiving a second wireless signal. The local clock adjustment is then based on both the first and second wireless signals, allowing for more accurate time synchronization by cross-referencing multiple timing sources. This method is particularly useful in wireless networks where precise timekeeping is critical, such as in distributed systems, sensor networks, or communication protocols requiring synchronized operations. The use of multiple timing sources enhances reliability and reduces errors in clock synchronization.
9. The method of claim 1 , wherein synchronizing the local clock to the common master clock comprises resampling a frequency of at least one of a digital to analog converter and an analog to digital converter based on the synchronization signal.
This invention relates to clock synchronization in digital systems, particularly for aligning local clocks with a common master clock to ensure precise timing across distributed devices. The problem addressed is maintaining accurate synchronization in systems where local clocks drift over time, leading to timing errors in data processing, communication, or signal conversion. The method involves synchronizing a local clock to a common master clock by resampling the frequency of at least one digital-to-analog converter (DAC) or analog-to-digital converter (ADC) based on a synchronization signal. The synchronization signal is derived from the master clock and is used to adjust the sampling rate of the DAC or ADC, ensuring that the local system's timing aligns with the master clock. This resampling corrects for any drift or phase differences between the local and master clocks, maintaining precise timing for signal processing tasks. The method may also include generating the synchronization signal by comparing the local clock to the master clock and calculating a phase or frequency offset. This offset is then used to adjust the sampling rate of the DAC or ADC, either by dynamically modifying the clock signal driving the converter or by interpolating or decimation of the digital signal. The technique ensures that data conversion processes remain synchronized with the master clock, reducing errors in time-sensitive applications such as telecommunications, audio processing, or measurement systems. The approach is particularly useful in systems where hardware clock adjustments are impractical or where software-based synchronization is preferred.
10. The method of claim 1 , further comprising: receiving, at the first device, over a wireless medium, a second wireless signal; generating a third plurality of packets based on the synchronized local clock and the second wireless signal; and transmitting to the second device, over the wired medium, the third plurality of packets, wherein the second wireless signal can be reconstructed based on the third plurality of packets and the common master clock.
A system and method for wireless signal synchronization and transmission over wired networks involves a first device receiving a second wireless signal over a wireless medium. The first device generates a third plurality of packets based on a synchronized local clock and the second wireless signal. These packets are then transmitted to a second device over a wired medium. The second device can reconstruct the original second wireless signal using the third plurality of packets and a common master clock. This approach ensures precise timing and synchronization between wireless and wired networks, enabling accurate signal reconstruction. The method leverages a synchronized local clock to maintain timing consistency, allowing seamless integration of wireless signals into wired infrastructure. The system addresses challenges in maintaining synchronization across different network types, particularly in applications requiring high precision, such as telecommunications, broadcasting, or industrial automation. By converting wireless signals into packetized data synchronized with a master clock, the method ensures reliable transmission and reconstruction of the original signal at the receiving end.
11. The method of claim 10 , wherein generating the third plurality of packets further comprises using the synchronized local clock to drive an analog-to-digital converter.
This invention relates to packet-based data transmission systems, particularly those requiring precise timing synchronization. The problem addressed is ensuring accurate timing in distributed systems where data packets must be processed with minimal latency and high synchronization fidelity. The invention describes a method for generating a third set of packets from a second set of packets, where the second set is derived from an initial set of packets. The method involves using a synchronized local clock to drive an analog-to-digital converter (ADC) during the generation of the third set of packets. The synchronized local clock ensures that the ADC operates with precise timing, allowing for accurate conversion of analog signals to digital data. This process is part of a broader system where packet generation, synchronization, and conversion are tightly integrated to maintain timing accuracy across distributed nodes. The use of the synchronized local clock in driving the ADC ensures that the digital data produced is time-aligned with other system components, reducing errors and improving overall system performance. The invention is particularly useful in applications requiring high-precision timing, such as telecommunications, industrial automation, and scientific instrumentation.
12. A first device for wireless communication comprising: an interface configured to: receive over a wired medium between the first device and a second device, a first plurality of packets from the second device, each packet of the first plurality of packets comprising data representative of a portion of a wireless signal comprising a second plurality of packets sampled from a continuous waveform based on a common master clock at the second device; and receive from the second device over the wired medium a synchronization signal based on the common master clock at the second device; a control loop configured to synchronize a local clock of the first device to the common master clock based on the synchronization signal; and a processor configured to reconstruct the second plurality of packets based on the first plurality of packets via aligning samples corresponding to the continuous waveform received in the second plurality of packs based on the synchronized local clock.
This invention relates to wireless communication systems where a first device receives and processes wireless signals that were sampled and transmitted by a second device over a wired connection. The problem addressed is maintaining precise synchronization between the sampling and reconstruction of wireless signals when transmitted over a wired medium, ensuring accurate reconstruction of the original continuous waveform. The first device includes an interface that receives a plurality of packets from the second device over a wired medium. Each packet contains data representing a portion of a wireless signal, which was originally sampled from a continuous waveform by the second device using a common master clock. Additionally, the interface receives a synchronization signal from the second device, also based on the common master clock. A control loop in the first device synchronizes its local clock to the common master clock using this synchronization signal. A processor then reconstructs the original wireless signal by aligning the samples from the received packets based on the synchronized local clock, ensuring accurate reconstruction of the continuous waveform. This method enables precise timing alignment between the sampling and reconstruction processes, critical for applications requiring high-fidelity signal reproduction.
13. The first device of claim 12 , wherein the first device comprises an endpoint, the second device comprises a common physical point, and the first device further comprises a transmitter configured to transmit, over a wireless medium, the second plurality of packets as a reconstructed signal.
This invention relates to wireless communication systems, specifically addressing challenges in reconstructing and transmitting signals between devices. The system involves a first device and a second device, where the first device acts as an endpoint and the second device serves as a common physical point. The first device includes a transmitter designed to send a reconstructed signal over a wireless medium. The reconstructed signal consists of a second plurality of packets, which are derived from an initial plurality of packets received by the first device. The system ensures reliable signal transmission by processing and reconstructing the packets before wirelessly transmitting them. This approach improves signal integrity and reduces errors in wireless communication, particularly in scenarios where signal reconstruction is necessary before transmission. The invention focuses on optimizing the transmission process by leveraging the first device's capabilities to handle packet reconstruction and wireless transmission, enhancing overall communication efficiency and reliability.
14. The first device of claim 12 , wherein the data representative of the portion of the wireless signal further comprises at least one of: chips indicative of the samples, CDMA patterns indicative of the samples, OFDM frequency-domain data indicative of the samples, and OFDM data without a cyclic prefix indicative of the samples.
This invention relates to wireless communication systems, specifically improving signal processing for devices that receive and analyze wireless signals. The problem addressed is the need for efficient and flexible representation of wireless signal data, particularly in systems using multiple access techniques like CDMA (Code Division Multiple Access) or OFDM (Orthogonal Frequency-Division Multiplexing). The invention describes a first device that processes a wireless signal by extracting samples from the signal and generating data representative of a portion of the signal. This data can include various forms of processed signal information, such as chips (in CDMA systems), CDMA patterns, OFDM frequency-domain data, or OFDM data without a cyclic prefix. These representations allow for different levels of signal analysis, depending on the requirements of the system. For example, chips in CDMA systems are short sequences of data that can be used for spreading and despreading operations, while OFDM frequency-domain data represents the signal in the frequency domain, useful for channel estimation and equalization. The inclusion of OFDM data without a cyclic prefix allows for more efficient processing in scenarios where the cyclic prefix is not needed, reducing computational overhead. The device may also include a second device that receives the processed signal data and performs further operations, such as decoding or error correction. This modular approach allows for flexible signal processing pipelines, where different components can handle specific aspects of the signal analysis. The invention ensures compatibility with various wireless communication standards by supporting multiple signal representation formats, making it adaptable to different network environments.
15. The first device of claim 12 , wherein synchronizing the local clock to the common master clock comprises: generating a recovered clock signal based on the synchronization signal; and locking at least one of a phase and a frequency of a local oscillator to the recovered clock signal, wherein the locked local oscillator is used as the local clock.
A system synchronizes a local clock in a first device to a common master clock in a network. The problem addressed is maintaining precise time synchronization across distributed devices, which is critical for applications like wireless communication, data processing, and distributed computing. The system includes a first device with a local clock and a second device with a common master clock. The first device receives a synchronization signal from the second device, which is used to generate a recovered clock signal. The recovered clock signal is then used to lock the phase and/or frequency of a local oscillator in the first device. The locked local oscillator serves as the synchronized local clock. This synchronization ensures that the first device operates in time alignment with the common master clock, improving coordination and reducing timing errors in the network. The system may also include additional devices that synchronize their local clocks to the common master clock, enabling network-wide time alignment. The synchronization process compensates for signal propagation delays and other timing discrepancies, ensuring accurate timekeeping across the network.
16. The first device of claim 15 , further comprising: a receiver configured to receive a second wireless signal from a third device, wherein to synchronize the local clock is further based on receiving the second wireless signal.
A system for wireless clock synchronization involves a first device that synchronizes its local clock with a second device using a first wireless signal. The synchronization process is enhanced by incorporating a receiver in the first device to receive a second wireless signal from a third device. This additional signal further refines the synchronization of the local clock, improving accuracy and reliability. The system may be used in applications where precise timing is critical, such as wireless networks, distributed computing, or sensor networks, where multiple devices must maintain synchronized time to coordinate operations. The inclusion of signals from multiple devices helps mitigate errors caused by signal propagation delays, interference, or device-specific clock drift, ensuring more robust timekeeping across the network. The receiver in the first device processes the second wireless signal to adjust the local clock, allowing for dynamic and continuous synchronization improvements. This approach enhances the overall performance and reliability of time-sensitive applications in wireless environments.
17. The first device of claim 12 , wherein synchronizing the local clock to the common master clock comprises: sampling a frequency of at least one of a digital to analog converter and an analog to digital converter based on the synchronization signal.
This invention relates to clock synchronization in electronic systems, particularly for synchronizing a local clock of a first device to a common master clock. The problem addressed is ensuring precise timing alignment between distributed devices in a system where clock drift or misalignment can degrade performance, such as in communication systems, data acquisition, or signal processing applications. The first device includes a local clock and a synchronization mechanism that receives a synchronization signal from the master clock. To achieve precise synchronization, the device samples the frequency of at least one of a digital-to-analog converter (DAC) or an analog-to-digital converter (ADC) based on the synchronization signal. This sampling allows the local clock to adjust its frequency or phase to match the master clock, compensating for any drift or misalignment. The DAC or ADC may be part of the device's communication or signal processing circuitry, and their frequency sampling provides a reference for clock correction. The synchronization process may involve comparing the sampled frequency to a reference or using the synchronization signal to dynamically adjust the local clock. This ensures that the first device operates in sync with other devices in the system, improving data integrity, signal quality, and overall system performance. The invention is particularly useful in applications requiring high-precision timing, such as telecommunication networks, industrial automation, or scientific instrumentation.
18. The first device of claim 12 , further comprising: a receiver configured to receive, over a wireless medium, a second wireless signal; wherein the processor is further configured to generate a third plurality of packets comprising data representative of a portion of the second wireless signal based on the synchronized local clock; and wherein the interface is further configured to transmit to the second device, over the wired medium, the third plurality of packets, wherein the second wireless signal can be reconstructed based on the third plurality of packets and the common master clock.
This invention relates to wireless signal processing and synchronization in distributed systems. The problem addressed is the need for precise timing and synchronization between devices to enable accurate reconstruction of wireless signals across multiple nodes. The system includes a first device with a processor, a local clock, and an interface for wired communication. The processor generates a first set of packets containing data from a first wireless signal, synchronized to the local clock, and transmits these packets to a second device over a wired medium. The second device can reconstruct the first wireless signal using the packets and a common master clock shared between devices. Additionally, the first device includes a receiver to capture a second wireless signal. The processor then generates a second set of packets representing a portion of this signal, synchronized to the local clock, and transmits them to the second device. The second device can reconstruct the second wireless signal using these packets and the common master clock. This ensures synchronized signal processing and reconstruction across distributed devices, improving accuracy in applications like wireless communication, signal monitoring, or distributed sensing. The system leverages precise timing to maintain synchronization between devices, enabling seamless signal reconstruction despite potential delays or variations in the wired medium.
19. A first device for wireless communication comprising: means for receiving, over a wired medium between the first device and a second device, a first plurality of packets from the second device, each packet of the first plurality of packets comprising data representative of a portion of a wireless signal comprising a second plurality of packets sampled from a continuous waveform based on a common master clock at the second device; means for receiving from the second device over the wired medium a synchronization signal based on the common master clock at the second device; means for synchronizing a local clock of the first device to the common master clock based on the synchronization signal; and means for reconstructing the second plurality of packets based on the first plurality of packets via aligning samples corresponding to the continuous waveform received in the second plurality of packs based on the synchronized local clock.
This invention relates to wireless communication systems where a first device receives and reconstructs wireless signals sampled by a second device. The problem addressed is the accurate reconstruction of wireless signals at a receiving device when the original signal is sampled at a transmitting device and transmitted over a wired medium. The solution involves synchronizing the receiving device's local clock to the transmitting device's master clock to ensure proper alignment of the sampled signal portions. The first device includes means for receiving, over a wired connection, a plurality of packets from the second device. Each packet contains data representing a portion of a wireless signal, which itself consists of multiple packets sampled from a continuous waveform. The second device uses a common master clock to sample the wireless signal. The first device also receives a synchronization signal from the second device, which is based on the master clock. Using this synchronization signal, the first device synchronizes its local clock to the master clock. Finally, the first device reconstructs the original wireless signal by aligning the samples from the received packets based on the synchronized local clock. This ensures that the reconstructed signal accurately represents the continuous waveform sampled at the transmitting device. The invention enables precise signal reconstruction in distributed wireless communication systems where signal sampling and processing are separated across multiple devices.
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December 8, 2020
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